The tank is filled with stainless steel wool.
Replace the stock oil level gauge with the supplied breather cap and install it.
The tank comes with an extension bracket, so you can mount it anywhere you like.
The effect of the performance is that the pressure generated in the crank is released to the outside and the rotation resistance of the crank is reduced, so that the rotation of the engine blows up smoothly, the response is improved, and the body operation by the accelerator is improved.
Basically, it is a design-oriented product, so extreme performance effects cannot be obtained.
Two types of intake and exhaust ports are available: bazooka type and popper type.
The difference is only in the design, not in the performance, so you can choose the one that suits your taste.